Q:
Recently I updated my HP G60t laptop from 32-bit Vista system to Win 7 system, and then I got a problem, system all sounds are gone, but before updating, everything was all right. And after updating, all devices have no sound, what’s the problem?
A:
Start the machine and press f8 continually, release until advanced option appears, choose “The last good correct configuration” and press repair. As for simple method, you can recover system with your own system, recovering to the time you haven’t got any failure like this time (or use recovery software to recover system),  if the problem is still the same,  please reinstall driver for sound card.

Computer soundless elimination methods are shown as below:
(1) First check up whether there’s a “speaker” on the right side of checkup task. If yes, it means the sound card is OK, the failure reason might be system sound is too small, or set mute, or the sound box failure. Continually checking whether there’s sound output through earphone, if yes, it’s the failure of the sound box.
(2) If there’s no “speaker” on the right side of the taskbar, next click the command “Control Panel/Sound and audio device” to open the dialog “Sound and audio device property”, and on the dialog, click “Sound” option card, and then click an application event in “Application Event” column (if there’s something wrong with the application), and then cho